# coding:utf8
from bs4 import BeautifulSoup
import re

class HtmlParser(object):
    def _get_new_urls(self, page_url, soup):
        
        links = soup.find_all("a", href=re.compile(r"/item/"))
        for link in links:
            new_url = link['href']
            new_full_url = urlparse.urljoin(page_url, new_url)
            new_urls.add(new_full_url)
        return new_urls

    def _get_new_data(self, page_url, soup):
        res_data ={}

        res_data['url'] = page_url

        title_node = soup.find('dd', class_ ="lemmaWgt-lemmaTitle-title").find('h1')
        res_data['title']= title_node.get_text()

        summary_node = soup.find('div', class_ ="lemmaWgt-lemmaSummary")
        res_data['summary']= summary_node.get_text()

        return res_data



    def parser (self, page_url, html_cont):
        if page_url is None or html_cont is None:
            return
        
        soup = BeautifulSoup(html_cont, 'html.parser', encodig = "utf-8")
        new_urls = self._get_new_urls(page_url, soup)
        new_data = self._get_new_data(page_url, soup)
        return new_urls,new_data

        


